If it is true that...

The species, as predicated of the individual, signify everything that is in the individual essentially, although it signifies this indistinctly

and

The nature of the species is indeterminate with respect to the individual just as the nature of the genus is with respect to the species

Then it must be true that...

The genus, as predicated of the species, includes in its signification everything that is in the species determinately

If it is true that...

The nature of the species is indeterminate with respect to the individual just as the nature of the genus is with respect to the species

and

The genus, as predicated of the species, includes in its signification everything that is in the species determinately

Then it must be true that...

The essence of a composite thing is not the composite thing itself, even if the essence is composite